What is the total surface area of a cuboid with dimensions in the ratio 5:2:1 and a volume of 1250 cubic meters?

To find the total surface area of the cuboid, we need to first determine its dimensions based on the given volume.

Let the dimensions of the cuboid be represented as 5x, 2x, and x, where x is a common multiplier. The volume of a cuboid is calculated as:

Volume = Length × Breadth × Height

Substituting the dimensions into the volume formula gives us:

1250 = 5x × 2x × x

This simplifies to:

1250 = 10x³

Now, to solve for x³, we divide both sides by 10:

x³ = 125

Taking the cube root of both sides, we find:

x = 5

Now substituting x back into our expressions for the dimensions, we get:

  • Length = 5x = 5 * 5 = 25 meters
  • Breadth = 2x = 2 * 5 = 10 meters
  • Height = x = 5 meters

Next, we can calculate the total surface area of the cuboid using the formula:

Surface Area = 2(Length × Breadth + Breadth × Height + Height × Length)

Substituting in the values we found:

Surface Area = 2(25 × 10 + 10 × 5 + 5 × 25)

This simplifies to:

Surface Area = 2(250 + 50 + 125)

Surface Area = 2(425) = 850 square meters

Thus, the total surface area of the cuboid is 850 square meters.

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